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Finding the Fourth Proportional to 18,297.50, 27,448.08 and 4,970.70

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Solution

The fourth proportional to 18,297.50, 27,448.08 and 4,970.70 is: 7,456.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.50 : 27,448.08 = 4,970.70 : x
  2. Step 2: Convert to fraction form
    18,297.50/27,448.08 = 4,970.70/x
  3. Step 3: Cross multiply
    18,297.50x = 27,448.08 × 4,970.70
  4. Step 4: Simplify right side
    18,297.50x = 136,436,171.26
  5. Step 5: Solve for x
    x = 136,436,171.26/18,297.50
  6. Step 6: Final answer
    x = 7,456.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.